横纹肌肉瘤近年国内文献报道多发生于耳部，而发生于鼻窦者鲜见。１９８５～１９９７年我们收治本病５例，为提高对本病的认识，避免在检查和治疗上走弯路，现报告如下。１　资料与方法１．１　临床资料５例中，男２例，女３例；年龄１２～２６岁。左侧３例，右侧２例。发病至 Rhabdomyosarcoma in recent years reported in the domestic literature occurred in the ear, but rare in the sinus. From 1985 to 1997, we treated 5 cases of this disease, in order to improve the understanding of this disease, to avoid detours in the examination and treatment, are as follows. 1 Materials and Methods 1.1 Clinical data 5 cases, 2 males and 3 females; aged 12 to 26 years old. 3 cases on the left and 2 cases on the right. To the onset